Period
to 3 April 2020

The following table provides summary statistics for contract job vacancies advertised in Essex with a requirement for TDD skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited TDD over the 6 months to 3 April 2020 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

Test-Driven Development (TDD)
6 months to
3 Apr 2020
Same period 2019 Same period 2018
Rank 29 7 4
Rank change year-on-year -22 -3 +2
Contract jobs citing TDD 38 147 159
As % of all contract jobs advertised in Essex 6.10% 18.01% 22.14%
As % of the Processes & Methodologies category 7.62% 20.65% 25.12%
Number of daily rates quoted 28 101 140
Median daily rate £505 £525 £525
Median daily rate % change year-on-year -3.81% - +31.25%
10th Percentile £425 £411 £425
90th Percentile £606 £600 £600
East of England median daily rate £478 £500 £513
% change year-on-year -4.45% -2.44% +12.64%
Number of hourly rates quoted 0 2 3
Median hourly rate - £63.65 £70.00
Median hourly rate % change year-on-year - -9.07% +89.19%
East of England median hourly rate - £62.30 £62.50
% change year-on-year - -0.32% +68.92%

TDD is in the Processes and Methodologies category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Essex with a requirement for process or methodology skills.

All Process and Methodology Skills
Essex
Contract vacancies with a requirement for process or methodology skills 499 712 633
As % of all contract IT jobs advertised in Essex 80.10% 87.25% 88.16%
Number of daily rates quoted 303 411 402
Median daily rate £475 £475 £500
Median daily rate % change year-on-year - -5.00% +27.80%
10th Percentile £252 £325 £313
90th Percentile £600 £588 £638
East of England median daily rate £435 £450 £425
% change year-on-year -3.33% +5.88% +6.25%
Number of hourly rates quoted 17 23 31
Median hourly rate £21.57 £16.50 £36.00
Median hourly rate % change year-on-year +30.73% -54.17% +2.86%
10th Percentile £17.35 £12.31 £15.75
90th Percentile £39.53 £48.00 £52.50
Median hourly rate £21.00 £19.50 £22.00
% change year-on-year +7.69% -11.36% -33.33%

TDD
Job Vacancy Trend in Essex

Job postings citing TDD as a proportion of all IT jobs advertised in Essex.

Job vacancy trend for TDD in Essex

TDD
Contractor Daily Rate Trend in Essex

3-month moving average daily rate quoted in jobs citing TDD in Essex.

Daily rate trend for TDD in Essex

TDD
Daily Rate Histogram in Essex

Daily rate distribution for jobs citing TDD in Essex over the 6 months to 3 April 2020.

Daily rate histogram for TDD in Essex

TDD
Contractor Hourly Rate Trend in Essex

3-month moving average hourly rates quoted in jobs citing TDD in Essex.

Hourly rate trend for TDD in Essex

TDD
Contract Job Locations in Essex

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing TDD within the Essex region over the 6 months to 3 April 2020. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Southend-on-Sea +1 11 £525 +6.06% 2
Rochford - 1 £490 -
TDD
East of England

For the 6 months to 3 April 2020, IT contractor jobs citing TDD also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all contract job ads across the Essex region with a requirement for TDD.

1 26 (68.42%) Agile Software Development
2 24 (63.16%) Scrum
3 22 (57.89%) Java
4 19 (50.00%) Kanban
5 16 (42.11%) BDD
6 14 (36.84%) Test Automation
7 13 (34.21%) Spring
7 13 (34.21%) User Stories
7 13 (34.21%) Microservices
7 13 (34.21%) Spring Boot
8 12 (31.58%) JIRA
8 12 (31.58%) Confluence
9 11 (28.95%) AWS
9 11 (28.95%) Oracle
9 11 (28.95%) Product Roadmap
10 10 (26.32%) Jenkins
10 10 (26.32%) SoapUI
10 10 (26.32%) SOAP
10 10 (26.32%) Web Services
10 10 (26.32%) MySQL
11 9 (23.68%) Pair Programming
12 8 (21.05%) Checkstyle
12 8 (21.05%) Selenium
12 8 (21.05%) SOA
12 8 (21.05%) J2SE
12 8 (21.05%) Java 8
13 7 (18.42%) Scaled Agile Framework
13 7 (18.42%) Linux
13 7 (18.42%) SQL
13 7 (18.42%) Microsoft

TDD
Co-occurring IT Skills in Essex by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same job type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Application Platforms
1 12 (31.58%) Confluence
2 1 (2.63%) JBoss
2 1 (2.63%) Mule
2 1 (2.63%) Oracle Service Bus
2 1 (2.63%) Oracle SOA Suite
2 1 (2.63%) Red Hat Fuse
2 1 (2.63%) WildFly
Applications
1 1 (2.63%) Microsoft Office
Cloud Services
1 11 (28.95%) AWS
2 5 (13.16%) Azure
3 3 (7.89%) GitHub
4 1 (2.63%) OpenShift
Communications & Networking
1 2 (5.26%) HTTP
1 2 (5.26%) SSL
1 2 (5.26%) TCP/IP
2 1 (2.63%) Internet
Database & Business Intelligence
1 10 (26.32%) MySQL
2 4 (10.53%) Oracle Database
3 1 (2.63%) BusinessObjects
3 1 (2.63%) Impala
3 1 (2.63%) MariaDB
3 1 (2.63%) Pentaho
3 1 (2.63%) PostgreSQL
3 1 (2.63%) Relational Database
Development Applications
1 12 (31.58%) JIRA
2 10 (26.32%) Jenkins
2 10 (26.32%) SoapUI
3 8 (21.05%) Checkstyle
3 8 (21.05%) Selenium
4 7 (18.42%) Git (software)
5 5 (13.16%) Cucumber
6 4 (10.53%) REST Assured
6 4 (10.53%) Subversion
6 4 (10.53%) Team Foundation Server
6 4 (10.53%) Zephyr
7 3 (7.89%) CMake
7 3 (7.89%) Maven
7 3 (7.89%) Visual Studio
7 3 (7.89%) Xcode
8 2 (5.26%) JIRA Agile
8 2 (5.26%) JMeter
9 1 (2.63%) Bitbucket
9 1 (2.63%) LoadRunner
General
1 4 (10.53%) Public Sector
2 3 (7.89%) Electronics
2 3 (7.89%) Finance
2 3 (7.89%) Manufacturing
2 3 (7.89%) Marketing
2 3 (7.89%) Telecoms
Job Titles
1 16 (42.11%) Developer
2 8 (21.05%) Java Developer
3 5 (13.16%) Tester
4 4 (10.53%) .NET Developer
4 4 (10.53%) VB.NET Developer
5 3 (7.89%) Architect
5 3 (7.89%) Automation Tester
5 3 (7.89%) Business Analyst
5 3 (7.89%) C++ Developer
5 3 (7.89%) Mobile Developer
5 3 (7.89%) Technical Business Analyst
6 2 (5.26%) Analyst
6 2 (5.26%) C# Developer
6 2 (5.26%) Java Engineer
6 2 (5.26%) QA Tester
6 2 (5.26%) Scrum Master
6 2 (5.26%) Senior QA Tester
6 2 (5.26%) Senior Tester
6 2 (5.26%) Technical Leader
6 2 (5.26%) Test Engineer
Libraries, Frameworks & Software Standards
1 13 (34.21%) Spring
1 13 (34.21%) Spring Boot
2 10 (26.32%) SOAP
2 10 (26.32%) Web Services
3 8 (21.05%) J2SE
4 6 (15.79%) RESTful
5 5 (13.16%) J2EE
5 5 (13.16%) REST
5 5 (13.16%) XML
6 4 (10.53%) .NET
6 4 (10.53%) Middleware
7 3 (7.89%) Direct3D
7 3 (7.89%) Java EE
7 3 (7.89%) OpenGL
8 2 (5.26%) HTML
8 2 (5.26%) SAML
9 1 (2.63%) Apache Camel
9 1 (2.63%) JSON
9 1 (2.63%) RabbitMQ
9 1 (2.63%) XSLT
Miscellaneous
1 5 (13.16%) Enterprise Software
2 4 (10.53%) Greenfield Project
2 4 (10.53%) Hybrid Cloud
3 2 (5.26%) Clustering
3 2 (5.26%) Self-Motivation
4 1 (2.63%) Client/Server
4 1 (2.63%) User Experience
4 1 (2.63%) Virtual Team
Operating Systems
1 7 (18.42%) Linux
2 6 (15.79%) Unix
3 3 (7.89%) Android
3 3 (7.89%) Apple iOS
4 2 (5.26%) Red Hat Enterprise Linux
5 1 (2.63%) Mac OS X
5 1 (2.63%) Windows
5 1 (2.63%) Windows Server
Processes & Methodologies
1 26 (68.42%) Agile Software Development
2 24 (63.16%) Scrum
3 19 (50.00%) Kanban
4 16 (42.11%) BDD
5 14 (36.84%) Test Automation
6 13 (34.21%) Microservices
6 13 (34.21%) User Stories
7 11 (28.95%) Product Roadmap
8 9 (23.68%) Pair Programming
9 8 (21.05%) SOA
10 7 (18.42%) Scaled Agile Framework
11 6 (15.79%) DevOps
11 6 (15.79%) Sprint Planning
12 5 (13.16%) API Testing
12 5 (13.16%) Integration Testing
12 5 (13.16%) Performance Testing
12 5 (13.16%) Software Architecture
12 5 (13.16%) Test Strategy
13 4 (10.53%) Continuous Integration
13 4 (10.53%) Refactoring
Programming Languages
1 22 (57.89%) Java
2 8 (21.05%) Java 8
3 7 (18.42%) SQL
4 4 (10.53%) C
4 4 (10.53%) VB.NET
5 3 (7.89%) C++
5 3 (7.89%) Perl
6 2 (5.26%) C#
6 2 (5.26%) JavaScript
6 2 (5.26%) T-SQL
7 1 (2.63%) Bash Shell
7 1 (2.63%) XPath
Qualifications
1 5 (13.16%) SC Cleared
1 5 (13.16%) Security Cleared
2 3 (7.89%) ISEB
2 3 (7.89%) ISTQB
2 3 (7.89%) OCP
2 3 (7.89%) Oracle Certification
3 2 (5.26%) BPSS Clearance
3 2 (5.26%) ISTQB Foundation Certification
Quality Assurance & Compliance
1 4 (10.53%) QA
2 1 (2.63%) Data Quality
System Software
1 4 (10.53%) Docker
2 2 (5.26%) Virtual Machines
Systems Management
1 4 (10.53%) Ansible
1 4 (10.53%) Terraform
2 2 (5.26%) Puppet
2 2 (5.26%) Single Sign-On
3 1 (2.63%) Kubernetes
3 1 (2.63%) Opscode Chef
Vendors
1 11 (28.95%) Oracle
2 7 (18.42%) Microsoft
3 3 (7.89%) SAP
4 1 (2.63%) IBM
4 1 (2.63%) Talend
4 1 (2.63%) WSO2